panic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *415378 49867 0 0 0x4000000 0 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000ab0000,ffff800000b28000,ffff800014914660) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800014914650,ffff800000ab0000,1) at in_ioctl+0x463 sys/netinet/in.c:299 ifioctl(fffffd803d265c00,80206913,ffff800014914650,ffff8000149333d8) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff8000149333d8,ffff800014914768,ffff8000149147b0) at sys_ioctl+0x5b9 syscall(ffff800014914830) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,ed3b1090010) at Xsyscall+0x128 end of kernel end trace frame: 0xed6a4863570, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic ifa_update_broadaddr does not support dynamic length ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000ab0000,ffff800000b28000,ffff800014914660) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800014914650,ffff800000ab0000,1) at in_ioctl+0x463 sys/netinet/in.c:299 ifioctl(fffffd803d265c00,80206913,ffff800014914650,ffff8000149333d8) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff8000149333d8,ffff800014914768,ffff8000149147b0) at sys_ioctl+0x5b9 syscall(ffff800014914830) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,ed3b1090010) at Xsyscall+0x128 end of kernel end trace frame: 0xed6a4863570, count: -8 ddb> show registers rdi 0xffffffff8118e297 db_enter+0x17 rsi 0x1d0c __ALIGN_SIZE+0xd0c rbp 0xffff8000149143f0 rbx 0xffff8000149144a0 rdx 0x1d0d __ALIGN_SIZE+0xd0d rcx 0xffff800015957000 rax 0xffff800015957000 r8 0xffff8000149143b0 r9 0x1 r10 0xffff800000a62400 r11 0x44b9c85f25534977 r12 0x3000000008 r13 0xffff800014914400 r14 0x100 r15 0x1 rip 0xffffffff8118e298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000149143e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=415378 stat=onproc flags process=0 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000149329f8,0xffffffff825545b0 process=0xffff8000148a2a38 user=0xffff80001490f000, vmspace=0xfffffd803f013440 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 49867 522210 4787 0 2 0 syz-executor.1 *49867 415378 4787 0 7 0x4000000 syz-executor.1 4787 346044 44504 0 3 0x82 nanosleep syz-executor.1 4557 314178 44504 0 3 0x82 nanosleep syz-executor.0 78355 248864 1 0 3 0x100083 ttyin getty 25969 482285 0 0 3 0x14200 bored sosplice 44504 299460 64871 0 3 0x82 thrsleep syz-fuzzer 44504 282885 64871 0 3 0x4000082 nanosleep syz-fuzzer 44504 212469 64871 0 3 0x4000082 kqread syz-fuzzer 44504 69325 64871 0 3 0x4000082 thrsleep syz-fuzzer 44504 296639 64871 0 3 0x4000082 thrsleep syz-fuzzer 44504 5758 64871 0 3 0x4000082 thrsleep syz-fuzzer 44504 13751 64871 0 3 0x4000082 thrsleep syz-fuzzer 64871 483406 17817 0 3 0x10008a pause ksh 17817 513218 5531 0 3 0x92 select sshd 5531 47299 1 0 3 0x80 select sshd 12424 120061 99495 73 2 0x100010 syslogd 99495 465954 1 0 3 0x100082 netio syslogd 59783 142575 1 77 3 0x100090 poll dhclient 56084 474736 1 0 3 0x80 poll dhclient 36285 436747 0 0 2 0x14200 zerothread 70450 299700 0 0 3 0x14200 aiodoned aiodoned 69446 343851 0 0 3 0x14200 syncer update 27526 70558 0 0 3 0x14200 cleaner cleaner 35522 89829 0 0 3 0x14200 reaper reaper 4351 487068 0 0 3 0x14200 pgdaemon pagedaemon 46877 303784 0 0 3 0x14200 bored crynlk 3301 182887 0 0 3 0x14200 bored crypto 66136 260232 0 0 3 0x40014200 acpi0 acpi0 65323 24434 0 0 3 0x14200 bored softnet 48555 509991 0 0 3 0x14200 bored systqmp 5193 61690 0 0 3 0x14200 bored systq 35683 367499 0 0 3 0x40014200 bored softclock 26506 346583 0 0 3 0x40014200 idle0 98943 477500 0 0 3 0x14200 bored smr 1 345870 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9549 6502K 6973K 78643K 13195 0 0 pcb 13 8K 8K 78643K 160 0 0 rtable 115 12K 12K 78643K 747 0 0 ifaddr 66 14K 14K 78643K 209 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 50 0 0 iov 0 0K 32K 78643K 126 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1214 76K 77K 78643K 2320 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 19 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 1K 1K 78643K 14 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1264 0 0 sigio 0 0K 0K 78643K 8 0 0 proc 48 38K 63K 78643K 821 0 0 subproc 32 2K 2K 78643K 187 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 153 0 0 in_multi 33 2K 2K 78643K 171 0 0 ether_multi 1 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 174 768K 768K 78643K 174 0 0 exec 0 0K 1K 78643K 392 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 100 21K 30K 78643K 3903 0 0 UVM aobj 79 3K 3K 78643K 81 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 115 0 0 NDP 18 0K 0K 78643K 67 0 0 temp 184 3531K 3600K 78643K 21867 0 0 kqueue 0 0K 0K 78643K 6 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 24 0 18 1 0 1 1 0 8 0 rtpcb 80 127 0 125 1 0 1 1 0 8 0 rtentry 112 137 0 93 2 0 2 2 0 8 0 unpcb 120 579 0 571 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 5895 0 5895 1 1 0 1 0 8 0 tcpcb 544 258 0 254 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 280 816 0 808 4 3 1 2 0 8 0 nd6 48 22 0 18 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 20 0 20 5 5 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 614 0 400 14 0 14 14 0 8 0 art_table 32 615 0 400 2 0 2 2 0 8 0 art_node 16 134 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 2 1 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 79 0 2 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3168 0 1780 46 0 46 46 0 8 0 ffsino 240 3168 0 1780 83 0 83 83 0 8 0 nchpl 144 5748 0 4150 60 0 60 60 0 8 0 uvmvnodes 72 3988 0 0 73 0 73 73 0 8 0 vnodes 208 3988 0 0 210 0 210 210 0 8 0 namei 1024 18030 0 18030 6 5 1 1 0 8 1 scsiplug 64 4 0 4 3 3 0 1 0 8 0 scxspl 192 24104 0 24104 11 10 1 7 0 8 1 plimitpl 152 135 0 128 1 0 1 1 0 8 0 sigapl 432 1409 0 1396 2 0 2 2 0 8 0 futexpl 56 24543 0 24543 6 5 1 1 0 8 1 knotepl 112 474 0 455 4 3 1 2 0 8 0 kqueuepl 104 256 0 254 1 0 1 1 0 8 0 pipepl 112 892 0 873 7 6 1 2 0 8 0 fdescpl 424 1410 0 1396 2 0 2 2 0 8 0 filepl 120 10472 0 10376 9 6 3 7 0 8 0 lockfpl 104 336 0 335 1 0 1 1 0 8 0 lockfspl 48 112 0 111 1 0 1 1 0 8 0 sessionpl 112 27 0 17 1 0 1 1 0 8 0 pgrppl 48 57 0 47 1 0 1 1 0 8 0 ucredpl 96 1560 0 1553 1 0 1 1 0 8 0 zombiepl 144 1396 0 1395 3 2 1 1 0 8 0 processpl 864 1425 0 1395 4 0 4 4 0 8 0 procpl 632 2802 0 2765 4 0 4 4 0 8 0 sosppl 128 11 0 11 6 6 0 1 0 8 0 sockpl 384 1537 0 1519 11 8 3 7 0 8 1 mcl64k 65536 28 0 28 6 6 0 1 0 8 0 mcl16k 16384 7 0 7 7 7 0 1 0 8 0 mcl12k 12288 16 0 16 6 6 0 1 0 8 0 mcl9k 9216 10 0 10 5 5 0 1 0 8 0 mcl8k 8192 17 0 17 6 6 0 1 0 8 0 mcl4k 4096 92 0 92 4 4 0 1 0 8 0 mcl2k2 2112 12 0 12 5 5 0 1 0 8 0 mcl2k 2048 51795 0 51748 22 15 7 14 0 8 1 mtagpl 80 35 0 33 3 2 1 1 0 8 0 mbufpl 256 91351 0 91243 17 9 8 9 0 8 0 bufpl 256 10238 0 4135 383 1 382 382 0 8 0 anonpl 16 153335 0 142750 108 44 64 73 0 62 4 amapchunkpl 152 6865 0 6758 19 13 6 10 0 158 1 amappl16 192 6938 0 6135 86 36 50 53 0 8 8 amappl15 184 35 0 35 2 2 0 1 0 8 0 amappl14 176 481 0 478 2 1 1 1 0 8 0 amappl13 168 220 0 218 1 0 1 1 0 8 0 amappl12 160 164 0 161 1 0 1 1 0 8 0 amappl11 152 230 0 219 1 0 1 1 0 8 0 amappl10 144 19 0 19 2 2 0 1 0 8 0 amappl9 136 856 0 849 1 0 1 1 0 8 0 amappl8 128 357 0 330 1 0 1 1 0 8 0 amappl7 120 82 0 76 1 0 1 1 0 8 0 amappl6 112 248 0 237 1 0 1 1 0 8 0 amappl5 104 357 0 347 1 0 1 1 0 8 0 amappl4 96 1742 0 1713 1 0 1 1 0 8 0 amappl3 88 229 0 222 1 0 1 1 0 8 0 amappl2 80 9763 0 9694 4 2 2 3 0 8 0 amappl1 72 35399 0 35002 28 19 9 20 0 8 0 amappl 80 3174 0 3138 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 80 0 2 2 0 2 2 0 8 0 uaddrrnd 24 1410 0 1396 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1410 0 1396 1 0 1 1 0 8 0 vmmpekpl 168 13080 0 13059 2 0 2 2 0 8 0 vmmpepl 168 172943 0 171110 215 103 112 112 0 357 29 vmsppl 272 1409 0 1396 3 1 2 2 0 8 1 pdppl 4096 2826 0 2792 6 1 5 6 0 8 0 pvpl 32 549982 0 536310 400 155 245 280 0 265 102 pmappl 200 1409 0 1396 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 564 0 57 15 0 15 15 0 8 0